Al-Qaeda has said it will continue to launch more terrorist attacks on the U.S. and warned the death of their leader Osama bin Laden, would “not be wasted”. The statement from the organization, posted on jihadist internet forums, came as the Pentagon released videos filmed inside the terrorist leader’s compound which was raided last weekend. Intelligence officials said at a briefing in Washington, D.C. that the videos showed that bin Laden was still playing an active role in al-Qaeda plotting.

Although the video tapes have no audio, they show bin Laden watching news coverage of himself on television and preparing to record a propaganda film. The tapes are the latest intelligence to emerge from computer equipment seized from bin Laden’s compound during the raid on his compound in Abbottabad, Pakistan by U.S. special forces last weekend. Earlier this week it emerged bin Laden had been planning an attack on the American rail network on the tenth anniversary of the September 11 attacksthis year. U.S. officials yesterday stressed that the al-Qaeda plot was only “aspirational”, but involved derailing multiple trains by damaging rail lines at various sites.

Osama bin Laden making a video at his compound in Pakistan.

Tonight one intelligence official said the information gleaned from the computers was the “single largest collection of senior terrorist materials ever.” The computer equipment also revealed that there were hopes of attacking major transportation hubs, and that during the six years he lived at the compound in Pakistan, bin Laden stayed in close contact with senior affiliates and played an active role in developing terrorist plots. An unnamed U.S. official told The New York Times that bin Laden “wasn’t just a figurehead,” but “continued to plot and plan, to come up with ideas about targets and to communicate those ideas to other senior al-Qaeda leaders.”

Confirming the death of bin Laden in a statement this week, al-Qaeda said his killing would be a “curse” on the U.S. and its allies. “Their happiness will turn into sorrow, and their blood will be mixed with their tears. We call upon our Muslim people in Pakistan, on whose land Sheikh Osama was killed, to rise up and revolt.” The revelation that al-Qaeda was planning more attacks against the U.S. comes only several days after officials warned the terrorist group was likely to be plotting a revenge attack to avenge the death of bin Laden.

‘We will never forget’

Four days after the raid on the compound, U.S. president Barack Obama visited Ground Zero in New York on Thursday to pay tribute to the 3,000 people killed in the September 11 attacks, for which al-Qaeda was found responsible. Bin Laden is believed to have masterminded the attacks on the Twin Towers and the Pentagon. “When we say we will never forget, we mean what we say,” Obama told firefighters in the city. He laid a wreath made from red, white and blue flowers after meeting with relatives of the victims of the attacks. “We are going to make sure that the perpetrators of that horrible act will see justice,” he said. After the wreath was laid, he stood with his head bowed for a moment of silence.

Barack Obama visited Ground Zero in New York on Thursday. Image: Chris Bridges.

The news of bin Laden’s death after a team of U.S. Navy Seals descended into the compound was greeted with celebrations across the U.S. on Sunday night, but concerns have been raised as to whether the killing was lawful after the terrorist leader’s daughter told Pakistani authorities that he had been captured and then killed. But Attorney General Eric Holder contradicted the statement, saying: “If he had surrendered, attempted to surrender, I think we should obviously have accepted that, but there was no indication that he wanted to do that and therefore his killing was appropriate.”

Obama’s visit came a day after he announced he would not be releasing images of bin Laden’s body. In an interview to be aired on CBS News, the president said: “It is important for us to make sure that very graphic photos of somebody who was shot in the head are not floating around as an incitement to additional violence, as a propaganda tool.” The images—described as “very gruesome”—are reported to show bin Laden shot above the left eye, with parts of his brain exposed.

Growing rift in relations

As Obama travelled to New York, the growing rift between the relations of the U.S. and Pakistan was continuing to grow after officials in Islamabad said the U.S. president may have breached U.N. rules by ordering the raid, because Pakistan was not told in advance. Senior officials within the Pakistani army also ordered the number of American military personnel in the country to be cut to “minimum essential” levels. Salman Bashir, the Pakistani foreign secretary, strained relations further at a press conference when he said there were serious concerns that the U.S. had breached U.N. resolutions on sovereignty, and said Pakistan is determined to “uphold our sovereignty and safeguard our security”. Pakistani army officials risked tautening relations between the two countries again on Thursday as they announced they would consider cutting ties with Washington, D.C. if the U.S. mounted another unannounced raid on their soil, and said they would be expelling U.S. military personnel in retaliation.

The president of Pakistan, Asif Ali Zardari, attacked "baseless speculation" that Pakistan was harboring bin Laden.

The conflict stems from the raid during the weekend on the Abbottabad compound. Pakistan says it was not informed about the raid, which involved U.S. helicopters flying into Pakistani airspace to drop commandos who raided the house. The rift has grown further after U.S. officials questioned how Pakistani intelligence allowed bin Laden to live in the compound, a short distance from a military training academy, and suggested the terrorist leader may have been harbored by the government. The director of the CIA said earlier this week that Pakistan was not informed about the raid because of fears he was being harbored by Pakistani officials who might warn him about the raid. The president of Pakistan, Asif Ali Zardari, dismissed “baseless speculation” that his administration was sheltering bin Laden.

U.S. Secretary of State Hillary Clinton insisted tension between Washington and Pakistan over the raid had been exaggerated, and said she was keen to keep relations with Islamabad. “It is not always an easy relationship. You know that,” she said. “But, on the other hand, it is a productive one for both our countries and we are going to continue to cooperate between our governments, our militaries, our law-enforcement agencies, but most importantly between the American and Pakistani people.”

Their happiness will turn into sorrow, and their blood will be mixed with their tears.

A police official in Mumbai has warned four suspected militants of Pakistani origin have entered the city, the capital of Maharashtra, India, and claims they are plotting attacks in the city. Police are now searching for the four people, thought to be members of Lashkar-e-Taiba (LeT), the Islamic fundamentalist militant group the Indian government holds responsible for the coordinated attacks which hit Mumbai in 2008. Joint police commissioner Himanshu Roy says intelligence suggests “the threat is serious.”

Ajmal Amir Kasab in the Chhatrapati Shivaji Terminus during the 2008 Mumbai attacks

A United States counter-terrorism official said the attacks are likely imminent, and will occur over the Christmas and New Year period. “There’s no question LeT remains interested in pulling off another large-scale attack in India,” the official said, speaking on condition of anonymity, “and we are alert to the possibility that LeT might again try a holiday attack.”

Speaking at a press conference, Roy said “[t]hey have recently arrived in Mumbai. We are not in a position to reveal their nationalities now but they are LeT members.”

Armed police have been posted around high-profile destinations in the city, and roads around the Taj Mahal Palace hotel—seiged by militants in the 2008 attacks—have been closed. Police have released a sketch of one of the militants believed to be in the city.

“The police [are] on high alert all over the city. We cannot take any of these intelligence inputs lightly in the holiday season,” another Mumbai official said. “Since yesterday, we are checking all the possible hideouts, small lodges and guesthouses, railway stations. We are checking all the vehicles that are coming into the city.”

166 people died and hundreds more were injured in the 2008 attacks, in which multiple gunmen attacked the Chhatrapati Shivaji Terminus railway station, a hospital, a police station, and numerous hotels, amongst other sites. The attacks were dubbed “India’s 9/11” by local media. Only one militant survived the attacks, Ajmal Amir Kasab; in May this year he was sentenced to death by hanging, on 86 charges, including murder, terrorism, and waging war against India.